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Paolite ties and <br />Electric Gompanyo <br />PG&E is continuing the process of conducting surveys on certain segments of existing gas pipes throughout <br />their service territory. These surveys are being performed as part of a process to measure cathodic <br />protection levels as well help detect the presence of external corrosion that may exist on the exterior of the <br />gas pipe or it's coating/wrapping. <br />This work is being performed by PG&E's contractor, Mears Group. It is a temporary, mobile survey done <br />with hand held equipment which involves a small crew walking along the chosen pipe segment taking <br />electronic readings every 2.5' -10' feet (depending on the depth of pipe). If the surface/cover above the <br />pipe is soft, such as soil, grass, gravel, etc, ..the readings can be taken directly without disturbing the <br />surface; however, if there is a hard insulating surface such as asphalt or concrete, a half inch (1/2") <br />diameter hole must be drilled at each interval to allow the test probe to reach the soil or base rock surface. <br />Once the survey data is recorded and verified, any holes drilled in pavement will be plugged with a foam <br />backer rod and the remaining 2-3 inches sealed with 3M Trak Loop Sealant. Any holes drilled in <br />concrete will be plugged and sealed with Quikrete Concrete Patch. Underground Service Alert tickets will <br />be called in for this work. <br />This survey work moves pretty quick and will take approximately one minute to drill each hole, then the <br />following passes for the actual surveys take far less time (walking pace). <br />